Next generation DSLAMs

Geoff Huston gih at
Thu Nov 22 10:36:42 UTC 2001

At 11/22/01 04:19 AM, srihari varada wrote:
>I would like to know what services are planned to be converged on the next 
>generation DSLAM boxes
>from the service provider point of view. A servicve that was talked of was 
>the VPNs provisioned through
>either ATM or IP/MPLS backbone networks. What would be the OSS support in 
>them? I would be interested
>in the subscriber management models especially. Any known literature 
>available in the public domain?
>I do understand that the majority of the current DSLAMs implement common 
>denominator function (that is to restrict their funcitonality at switching 
>or teminating ATM PVCs.) PPP and PPPoE,
>designed to preserve dialup experience and capital investment of ISPs on 
>dial up infrastructure,
>will be processed at the competitive or non-competitve ISP domains.

One view is

  It appears that DSL systems are commonly built to conform to  regulatory 
requirements regarding competitive access as their primary objective, which 
in turn often leads to less than optimal performance engineering in the 
access network.


     Geoff Huston

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